xulrunner-devel @2.0b7 Configure error: Can't find header GL/glx.h for WebGL

[smbmacportstrac@…]

The previous version didn't have this problem:

root# port installed xulrunner-devel
The following ports are currently installed:
  xulrunner-devel @1.9.2rc1_0 (active)

The new 2.0b7 version can't find GL/glx.h on Mac OS X 10.5.8 (9L31a).

:info:configure checking for posix_fallocate... no
:info:configure checking for GL/glx.h... no
:info:configure configure: error: Can't find header GL/glx.h for WebGL (install mesa-common-dev (Ubuntu), mesa-libGL-devel (Fedora),
 or Mesa (SuSE))
:info:configure shell command " cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_d
evel_xulrunner-devel/work/mozilla-central" && ./configure --prefix=/opt/local --with-xulrunner-stub-name=xulrunner-stub --disable-st
atic --enable-shared --with-distribution-id=org.macports --enable-default-toolkit=cairo-gtk2 --x-includes=/opt/local/include --x-lib
raries=/opt/local/lib --with-system-nspr --with-nspr-prefix=/opt/local --with-system-nss --with-nss-prefix=/opt/local --with-system-
bzip2=/opt/local --with-system-j
peg=/opt/local --with-system-zlib=/opt/local --enable-system-lcms --enable-system-cairo --enable-system-sqlite --with-default-mozill
a-five-home=/opt/local/lib/xulrunner-devel --enable-oji --enable-plugins --enable-mathml --enable-extensions="default,spellcheck" --
enable-permissions --enable-cookie --enable-image-decoders=all --enable-image-encoder=all --enable-canvas --enable-jsd --disable-xpc
tools --enable-crypto --enable-pango --enable-svg --enable-svg-renderer=cairo --enable-xinerama --with-pthreads --disable-gnomevfs -
-disable-gnomeui --enable-postscript --enable-safe-browsing --disable-crashreporter --enable-optimize='-O2' --disable-prebinding --e
nable-strip --enable-install-strip --disable-debug --disable-installer --disable-updater --disable-pedantic --disable-tests --disabl
e-mochitest --disable-necko-wifi --enable-libxul " returned error 1
:error:configure Target org.macports.configure returned: configure failure: shell command failed (see log for details)
:debug:configure Backtrace: configure failure: shell command failed (see log for details)
    while executing
"$procedure $targetname"
:info:configure Warning: the following items did not execute (for xulrunner-devel): org.macports.archive org.macports.configure org.
macports.build org.macports.destroot

[jmroot (Joshua Root)]

Is this still a problem with the current version? Among other things, a dependency on mesa has been added in the meantime.